Mouthpiece-seal lock for cans and the like.



PUTHWECE SEAL LQCK FOR CANS ND THE LIKE'.

APPLYCTION HLED MN5, 1914.

Patent@ uy on Fig. 5.

UNITED S aras r EMIL TYDEN, 0F EVANSTN, ILLINIS.

lfIOUTHPIECE-SEAL LGCK FOR CANS AND THE Lm.

3i ,id-5,999.

Specification of Letters Patent.

Patented July o, 2915.

Application tiled .anuary 5, l. VSerial No. 810,402.

To rIZ/ wlw/n 'it may concern Be it known that l, FunJ Ti'DnN, a citizen of the United States, residing at Evanston, in the county of Cool; and State of illinois, have invented new and useful improvements in illoutlipieceeal Locks for Cans and the like, ot which the following is a speciiication. reference being` had to the accompanying drawings, formingr a part thereof.

The purpose of this invention is to provide an improved device for closing a mouthpiece such as that of a can, tank or discharge pipe from any receptacle adapted to prevent the closure from being?r loosened in the least while remaining sealed.

It consists in the elements and features of construction shown and described, as indicated in the claims.

In the drawinjrsz-Figure l is a top plan view ot' a portion of a can having` its mouth provided with a closure embodying` this invention. Fig. 2 is a. section at the line, 9 2, on Fig. l. Fig. 3 is a section at the line, 3-PL on Fig. Q. Fig. el is view similar to F ig. l of a modified form. Fig. 5 is a section 1at the line. on Fig` 4;. Fig. G is a section on an enlarged scale at the line, 6 6, Fig. 7 a view similar to Fig. G, showing the seal-receiving parts at unlocked position,-that is. without the seal.

In transporting liquids in cans or other receptacles from which they are to be poured, the filling mouth is also customarily the discharge mouth and is most conveniently provided ina mouthpiece adapted to be closed by a screw-cap or plug. Especially in the case of volatile liquids such as gasolene, large waste is liable to occur from even slight loosening of the screw-cap or plug, and it is possible t'oi" large stealings to be made in the course of transportation by merely loosening;- the screw-cap or plug and inverting' the receptacle into a vessel which may,v receive the leakage. For these and other reasons it is very desirable to provide means for sealing such receptacle closures so that they cannot be loosened without disclosingthe tact by the mutilation or removal of the sealing devices; anfkthis is accomplished by the present invention.

In the drawings, A represents a portion of the can body having a mouth-piece fitting, B, which is iu common i'orm, in that it is an eXteriorly-tliread d netting adapted to be closed b v an interior reread l cap (a re-v version of these detai "i, consistent with the invention). The'inoutlrpiece litting, B, has an annular flange, B1, about the mouth, exteriorly threaded, as stated, to receive the closure, C, which is a cap interiorly threaded for screwing onto the exteriorlythreaded flange of a mouth-piece.

D is an outer cap or hood which incloses -the closure cap, C, the latterbeing rotatably mounted in the cap, D, such mounting being most conveniently effected by providing the closure, C, with an axially-extended stein, C1, which is inserted through a central aper turein the top or the cap D, and has its end riveted down over a retaining collar, C2, which collar isaccommodated. in a counterbore. D. about the central aperture, D1, ofthe cap, D, the riveted end et' the stein, C1, and the retaining collar, C2, being completely covered and rendered inaccessible by a plate or disk, F, let into the counterbore, and accommodated within the depth thereof, said counter-bore being' additionally counter-bored to form a shoulder, ZE on which the plate, F, seats, the margin of the counter-bore being riveted down over the periphery of the plate and retaining it securely enough to preventany accessexcept by such violent means as will be obvious and give evidence of the tampering of the device. rlhe closure cap, C, is thus svviveled in the outer cap or hood, D, with perfect freedom to turn about the axis; but the amount of turning which is possible is `limited by a stop,- c, projecting up from the top of the cap, C, and a coperatingr stop, (Z, projecting' down from the inner surface of the top of the cap, D, said upper surface of the cap, C, and inner surface of the cap, D, being spaced apart to accommodate the stops, c and (I, by the expedient of forming a shoulder, c1, on the stem, C1, of the cap, C.

The two caps being connected as described. it will be seen that the outer cap, l), may be rotated relatively to the closure cap, C, one full turn less the angle occupied y the two stops, c and d; and it will be seen that upon applying' the device comprising the closure, C, and the cap, l), to the mouth piece, and rotatingr the cap, D, to the right (assuming` the thread ofthe mouth-piece and closure to be a right-handed thread). The engagement of tlie stop, (l, with the stop, c, will cause the closure cap, C, to be rotated, screwing it down upon the mouthpiece until it is tight, and that upon then reversing the rotation of the cap, D, it may be given nearly a full turn without causing the stop, c, to encounter the stop, d, and

ftherefore without any possibilityA of unscrevving the closurecap from the mouthmargin of its base flange, B1, parallel 'to' the axis, and the cap, D, has a flange, D2, whose diameter is suilicient to cause it to extend to the foot of the lug, B3, and at the margin of this flange there is provided an up-standing lug, D3, corresponding to the lug, B3, and adapted to be opposite the latter when the cap has been backed through a relatively small angle from the poin't at which it stands upon completing the driving home of the closure cap, The 'angle mentioned provides for the unavoidable variation in the position at which the thread will become tight ony diiferent fittings when made as nearly uniform as possible, and such further variation as will arise in the `use of the device after repeated tightenings and loosenings, the necessity being that it shall in all cases be possible to bring the hereinafter mentioned seal slots in the two lugs, D3 and B3, into registration with eachother when the closure cap has been screwed tight, and without using up any more than a small portion of the range of reverse movement of the cap, D. The two lugs, B3 and D3, are provided with seal slots, b3 and d3, which are' registered when the two lugs are opposite each other so as to receive through them both the securing memberV of any suitable sealing device which is represented in the drawings by a seal having a metalstrip,`Gr, as a securing member. ID3-,and cl3, have their length in a verse to the axis of the device,

plane transso that the sealin stri *is resented edfrewise to any attempted movement of the cap, D, for unscrewing, thus defeating any possibility of drawing the strip between the lugs, B3 and 3, and insuring that the strip will be sheared in two if the cap, D, is forced out of sealed position. t

It Will be seen that the invention is not limited in its essential 'character' to what might be 'strictly described as a threaded closure fitting, but, on the contrary, any closure fitting adapted tovbe secured by Arotation, may be equipped with this invention. Also, it will'be observed that it is not limited to the particular kind of seal shown,

but, on the contrary, any seal having its securing member or device adapted to defeat relative rotation of the cap and mouthpiece, can be employed with suitable moditication of the members provided for its enga gement with the cap and the -mouth-piece.

For convenience preferred to form the upper end of the cap, D, with bosses, d4, d4, which may be engaged Preferably the slots,

of manipulation, it is.

plunger bolt. This plunger bolt serves as a means of engaging the outer cap, D, with the closure cap, C.' For vhousing the plunger, a srelatively long cylindrical boss, D6,

projects up from the cap, D, and has a slot,-

d", which is engaged by a spline, h, on the plunger, H, permitting and guidngthe verl tical reciprocation of the plunger. This slot extends to the top of the boss so that the vspline/runs out of it of its movement,'-tlat is, when the plunger bolt is drawn out of engagementv with the closure cap, the plunger, H, which is prevented from further Withdrawal byits enlarged head, H1, encountering an interior shoulder, da, in the boss, D, can be rotated inthe boss, causing the spline tobe stopped upon 'the top of the boss, and prevent the depression of --the plunger untilit is turned around again into line with the slot.

upon the top of the of the seal can. be inserted slots in the boss and plunger,

member, G, through the and when so inserted, will prevent the plun` so will prevent it' ger being rotated and being depressed into closure-engaging position. When the device is thus sealed, it Will be seen tha"J the cap, D, is powerless to rotate the closure cap,'C stood that thisv modification can be operated iny substantially the same manner as the Aform first described. That is to say,` when unsealed, the plunger, H, being turned so as to register the spline, with the slot, d?, and pressed down while the cap, D, is-rotated, will presently come into engagement with the socket, c, thus engaging the'cap, D, with the closure cap, C, Wherupon'the closure cap can be screwed home. This hav` ing been done, plunger and returning it to seal-receiving at the upper limit' C, and when thus withdrawn,-

boss and has been turnedA 90 degrees around from theslot, d. At this' position it will be seen thatv the securing.

It will be under-l the operator retracting 'thel there is shown a modificat n bolt, H, and the closure cap, C, has 1n its head a socket, 05,' to receive the At a position about 90 degrees around,

that of position, will insert and secure the seal, pre- 1. ln combination with a ylinou'th-pieoe, a l

closure for the same adapted to.beengaged- 5 the former, the mou1-ii-pieee and 'ning members adapted io be seaia :ig-limsi relative ioatioii a-a dis- 'iosiiion m iieeap and eiosiue. i *i eonibiimiion with a serewibreaded :zii-piece and a sei-ewhieaded closure die. saine, a cap indosing a closure, havdie iatteirotatabiy mounted in it; de-

engaging theeap with the eiosin'e n of ehe iatei' by iie former, the l5' ,eee and iiie cap having members v Io be seai-eonneoegi against ieiai ion at a disengaged position of the and closure.

iinaion with a monili-piece, a s; me adapted io be engaged otation about an axis; a cap a closure, having the latter roil niounel in it; eopeiiating stops on i fai: and iiosme which are inelose'd Withiap., adapted io be engaged ami to rotation of the Cap with reo i*be oiosiue in coming into engage- 'e mouth-piece and the cap having adaped to be seid-connected againstota'ion ai.A aV disengaged position of f a iiinired l'binaion with a mouth-piece, 'a 'the saine adapted to be engaged .joi' rotation about an a cap ine closure having iie iat-tei' roiatabiy mounted in it; devices the cap with the closure for rotation of the iatteif by iie formez', the mouth-piee and ti cap having members adapted to be seai connected against i'eiaiive rotation at an iinengaged posiion of said engaging devices, one of saiiiL sed-Connected elements having ifo such members' at opposite .sides of the axis, whereby choice of'two positions for effecting iie seal connection is afforded.

5. In combination with a month-piece, a Closure for the same adaped to be disengaged therefrom by rotation about an axis; a cap inciosing a closure, said two members being swiveied to each other at ibeii1 axis;

`devices for engaging the cap with the closui'e" foi1 rotation of the latter by 'the former, the monili-piece and cap having members adapt?v ed to be seal-conneetedat an unengaged po sition of said devices.

G. En combination with a mouth-piece, a eiosuie for the same adapted o be engaged theiewith for rotation aboui an axis; a cap inciosing the Closure, the latter having an axialyextended stem by means of which it, is swiveied to the cap. the cap having a permanently secured plate covering the end of the siem iiom exterior access.

in testimony Wbei'eoi'` I have bei unto set e my hand at Chicago, ihnois, this 31st day oi December, 1913. v

EML TYBEN for engaging 

